Statements Archives - {coding}Sight

The SELECT INTO Temp Table Easy Guide: How to Manage Temporary Data Without Dismay

Edwin Sanchez — Wed, 16 Aug 2023 16:07:54 +0000

Data processing may involve several steps. And it can be fun! But the fun ends when you access some joined tables again and again. So, when you look at your SQL code, it’s yucky and ugly because of repeated lines. But what if you can store the results of those joined tables in temporary storage? …

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SQL Server UPDATE from SELECT: How to Bulletproof Your Updates Like a Pro

Edwin Sanchez — Wed, 14 Jun 2023 16:02:39 +0000

SQL Server UPDATE from SELECT is not your usual cup of tea on T-SQL. So, it’s time to level up your UPDATE skills. But with this, you have a new foe: code complexity. Crushing code complexity is a source of many headaches. Reading rows using a complex query is one thing. Updating rows is another. …

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SQL Aggregate Functions: Easy Tips for Newbies

Edwin Sanchez — Wed, 28 Sep 2022 07:59:00 +0000

SQL Aggregate Functions are functions that perform calculations and return a summarized result. With these, it’s easy to do these calculations on data sets: But there’s more. Statistical calculations like standard deviation and variance are also part of the tools. Mix it with grouping and sorting, and you’ll have something fantastic for your new report. So, …

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The Tutorial Guide to SQL Server DROP TABLE Statement

Nisarg Upadhyay — Thu, 22 Sep 2022 07:24:00 +0000

The SQL DROP statement is a command that deletes existing database components or the entire databases with all their data permanently. There are other SQL commands with a similar effect (TRUNCATE or DELETE), but the specificity of the DROP command is that it deletes everything at once. For instance, DROP TABLE removes the table data, …

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Exploring SQL Server LEN() Function

Rajendra Gupta — Fri, 25 Mar 2022 17:43:40 +0000

SQL Server supports different data types to store relevant data in SQL tables. These data types can be integer, float, Varchar, NVARCHAR, Float, Char, bit. While we work with the string data types, it is common to find string length. Suppose you have a web portal where users create their profiles. In the profile section, …

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SQL Server COUNT Function

Raja Jegan — Fri, 25 Mar 2022 17:25:37 +0000

COUNT is one of the common SQL Server Aggregate operations done by almost all SQL Server Developers for their day-to-day needs. In this article, we can understand the COUNT Aggregate function, other possibilities of using the COUNT operation, and other functions to perform complicated Data Aggregate requirements. What Is Aggregate Function Aggregate functions perform a …

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SQL Cheat Sheet: What is SQL, SQL Commands, and SQL Injection

Philipp Zhenov — Wed, 20 Oct 2021 08:04:10 +0000

Using Structured Query Language (SQL) can seem complicated at first, but further, it will become easier and much more convenient. You only need practice. If you are looking for better ways to manage data in your database or if you are simply curious about the possibilities that SQL opens up to you, then you have …

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SQL JOINs Tutorial with Examples

{coding}Sight — Tue, 19 Oct 2021 07:18:46 +0000

In this article, we are going to takes a close look at SQL Server JOINs. We will review all supported SQL Server JOIN types with syntax, visual illustrations, and examples. As we all know, table data is the core of any SQL database. To use it effectively, database administrators need to extract records from several …

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Drop Temp Table in SQL Server and PostgreSQL

Nisarg Upadhyay — Fri, 08 Oct 2021 09:01:28 +0000

This article explains different ways to drop the temp table in SQL Server and PostgreSQL. As the name suggests, temporary tables are used to store the data temporarily. It can be used to process the data without accessing the actual table. We can create indexes, statistics, and constraints on the temp tables. Temporary Tables in …

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How to Use SQL Server T-SQL Function SUM: 5 Use Cases

Manvendra Singh — Wed, 08 Sep 2021 07:43:58 +0000

The T-SQL SUM function is one of the fundamental functions. Its purpose is to calculate the sum of all values in the specified column – note that it applies to numeric columns only. Below is the syntax of SQL SUM. ALL is a default value, not mandatory to pass. It allows for returning the sum …

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